ec1e04459cd3d6bca52b4b3e0e810352c3ae32781c1b097be2145de9964e1ac6

Analysis

max time kernel
60s
max time network
43s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 16:45

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General

Target

kayflock-beta.exe
Size

1.5MB
MD5

60870aeea40cf956a4144040262f9ad4
SHA1

0010576075dff708aee85f069f371e848f729b58
SHA256

ec1e04459cd3d6bca52b4b3e0e810352c3ae32781c1b097be2145de9964e1ac6
SHA512

1a135a3c3d255830fba48a2b4f598521a19e1817b967b9855a28597ac62460bc04335f10e62a9a627d59ef25617c64949d07f070029451f28654d956c70b548a
SSDEEP

24576:KYv3rBPikLE3SHTb2DS74nMfxru7T/AnitacsI0n3/oUEWzS05UEdIKz3z:f396kA3SzaDznAxrgwnc43/oUVzS0

Score

8^/10

persistence

Malware Config

Signatures

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\frAQBc8Wsa1xVPfv\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\frAQBc8Wsa1xVPfv"	kayflock-beta.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4128	kayflock-beta.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeLoadDriverPrivilege	4128	kayflock-beta.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4128 wrote to memory of 3264	4128	kayflock-beta.exe	95
PID 4128 wrote to memory of 3264	4128	kayflock-beta.exe	95
PID 3264 wrote to memory of 4312	3264	cmd.exe	97
PID 3264 wrote to memory of 4312	3264	cmd.exe	97
PID 3264 wrote to memory of 4664	3264	cmd.exe	98
PID 3264 wrote to memory of 4664	3264	cmd.exe	98
PID 3264 wrote to memory of 4292	3264	cmd.exe	99
PID 3264 wrote to memory of 4292	3264	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\kayflock-beta.exe
"C:\Users\Admin\AppData\Local\Temp\kayflock-beta.exe"
1⤵
- Sets service image path in registry
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4128
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\kayflock-beta.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3264
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\kayflock-beta.exe" MD5
    3⤵
    PID:4312
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:4664
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:4292

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4104 --field-trial-handle=2288,i,10301911031503898037,2997280636231771547,262144 --variations-seed-version /prefetch:8
1⤵
PID:1036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads